Jacking device for vehicle beds



Sept. 4, 1928. 1,682,910

G. JAEGER JACKING DEVICE FOR VEHICLE BEDS Filed June 22, 1926 Fig.3.

1 1 2 GEBHARD JAEGER 9 -4 QEMY new I.

GEBPIARD JAEGER, or COLUMBUS, 01110. t

'JAcKIr-ie nnvIcE maximum ii anus Application med June 22,

i concrete mixing machine including the engine tor operating it is often mounted on g the springs subjecting them to severe strains endangering their integrity or the security oftheir fastenings. To give stability to the bed of such a truck it has heretotore 'been i the practice to use two; screw jacks to relieve the Weight of the bed on the spring and transfer it to I the ground. The use of screw jackshas been troublesome and time consuming and the ob ject of this invention is to dispense with their H use and provide improved means whereby the bed can be quickly elevated and firmly supported. I According to the invention there .is em ployed a ground or purchase member and a wheel chock together with a rod pivotally connected with the purchase member and the 7 vehicle bed, such rod adapted, when properly positioned and swung, to elevate the bed in 3 respect of its supporting spring andthen retain the bed in elevated position when the vehicle has been moved to. cause the wheel to abut againstthe chock. r

The inventionis embodied in the example herein shown and described, the feature of novelty being finally claimed. v

In the accompanying drawing- Figure 1 is a view inside elevation of the rear end of the truckshowing my invention applied thereto. i 1 Fig. 2 is an elevation looking toward the leftliandside of Fig. 1, parts bei'ngjbroken out. i c

Fig. 3 is a top plan view of the purchase lock and chock. i I

Inthe views 5 designates the truck bed; 6 the rear or differential axle;"( the wheels thereon, and 8 the spring connecting the axle and the bed and. supporting thelatter on the former. The machinery before referred to, not shown, is suitably mounted on the bed.

Fixed to upright frame members 9 at the rear of the bed are stud bearings 11 on which are pivotally hung rods'12. The lower-end 5 of each rodhas hinged to it at 13 a foot The bed of the truckis mounted.

the jacks the latter resting on- 1926. Serial No. 117,727.

formed witha lateral extension 1% having an inclined chock 15 lying when the rod is lowered to operating position in line with the Wheel. If desired two jacking members can be connected together by a rod 16 so that both can be raisedand lowered together and any suitable means, not shown, but well understood canbe used to hold said acks in the turned up. position as indicated by broken line 1.

The operation, is this When the rods are in lowered position as shown byfull lines in the views and the truck is backed until the wheel abuts against the chock the upper end of the arm is swung on an arc to the position shown by broken lines Fig. 1. In

this movement the chocking device remains stationary. on the ground and arrests the movement of the wheel shortly after the bearing 11 has passed thepeakA of the are but before said bearing and consequently thebed have descended to normal position. Be

cause the wheel can go no farther rearwardand' because the load-of the bed must be lifted. to draw the bearing 11 and bed again to the original free position the bed and rod are locked in broken line positionjaending the, application of the necessary force in the contrary direction: to move the'bearing for ward over the peak of the arc. Such force, of course, inthe construction shown isin the forward movement of the vehicle.

' The lifting movement required to liftand sustain the load of the bed and its'machinery isquite slight sothat it is not necessary to lift the bed so high that the wheels are removed from the ground and the traction 1(Means for'relieving the weight ofa wheeled vehicle bed on its supporting spring,

" thereof lost. This operation is important where the rear'wheels are driven ones as is including a ground purchase member and wheel chock connected'together, a rod pivotally connecting the purchase member and. vehicle bed, said rod adapted'to elevate the bedv in respect to its supportingspring when.

said chock limiting the movement of the wheel while the bed is in elevated position. i2. Means for relieving the weight of a the vehicle wheelis moved towardthe chock, I 

